Abstract
New sulphides of transition metal ions [M+n = Cu+1, Cu+2 and Zn+2] have been synthesised in sunlight. XRD patterns show that these compounds are not MxSy but are mercaptyl, hydroxyl metal sulphides [M(SH)(OH)(H2O)2] which is further ascertained by I.R. spectra showing bands due to T d-symmetry. ESCA of compound of copper in solid state shows presence of Cu1+ and Cu2+ ion. The presence of hydroxyl, mercaptyl, aqua and S−2 groups has finally been confirmed with TGA, DTA and ESCA. Conductivity and Seebeck coefficient measurements show that compound of copper is p-type semiconductor and compound of zinc is n-type semiconductor. The production of these low cost materials opens an interesting area of research and development for their use in solar cell devices.
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Lakshmi, S., Sahay, A. & Shukla, S. Synthesis of new sulphides of transition metal ions in presence of sun light. Journal of Materials Science 39, 1325–1329 (2004). https://doi.org/10.1023/B:JMSC.0000013892.64323.34
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DOI: https://doi.org/10.1023/B:JMSC.0000013892.64323.34